Tank



F. W. HOLBROOK TANK Filed Aug. 12, 1922 Patented eb. 10, 1925..

UNITED STATES PATENT OFFICE FREDERICK w. nommoox. or Los moms. cuu'oxmm.

TANK.

Application filed August 12, 1922. Serial in. 581,378.

To all w/zom it may concern:

lie it known that I, Fnnnmuox W. HoL- nnooic, a citizen of the United States, residing at Los Angeles in the county of I os Angeles and State of California, lave 1 nvented new and useful Improvements in 'lanks. of which the following is a specification.

My invention relates to metallic storage tanks and more particularly to the structural features of that class of tank which is preferably of cylindrical formation and built up of a plurality of sheet metal plates which have been previously shaped into segmental sections.

My invention consists of certain details of construction and arrangement of parts whereby the parts may be first formed by suitable dies at the factory, shipped in the knock-down condition and then readily assembled at their destination, without the use of rivets or the employment of skilled labor, to form a thoroughly liquid or air tight tank.

Another object of my invention is to provide a reinforced tank which will be economical of construction, and possess lightness, strength and durability.

Other objects will be more full set forth in the following specification, re erence be ing had to the accompanying1 drawings which form a part thereof, in w ich:

Fig. 1 is a view of an assembled tank, embodyin the features of my invention, shown partial y in side elevationand partlally in section.

Fig. 2 is an enlarged fragmental vertical section through the same.

Fig. 3 is a fragmental plan section taken on the line 33 of Fig. 2.

Fig. 4 is an enlarged fragmental section taken on the line 4-4 of Fig. 1.

Fig. 5 is an enlarged section through the lower corner of'the tank showing a modified construction for securing the bottom of the tank to the side wall.

In carrying out my invention repre sents a tank havin the annular wall 11 and the bottom 12. he wall 11 comprises a plurality of segmental plate sections 13, the ed e extremities of one section being adapted to overlap the edge extremities of an adjacent section and to be secured together by means of suitable bolts 14.

The segmental sections are fprovided with longitudinal corrugations to arm strengthening ribs 15 and the adjacent overlapping edge extremities are provided with re 'stermg apertures to receive the bolts 14, t 1118 roviding for securing the various sections rmly in position to form the side wall of the tank.

Dislposed interior-1y of the tank and opposite t e horizontal seams, as well as at its top and bottom edges, are the annular strengthening and reinforcing members 16 which are preferably formed of channel iron, and interposed between the overlapping surfaces 0 the segmental plates 13 are strips of packing material 17, havin suitable apertures therein for the receptlon of the bolts 14.

At each vertically disposed seam or overlapping joint are disposed strengthening and reinforcing members 18 which are preferably formed of channel iron and shaped to fit into the hollow of the rib corrugations 15 and which are provided with apertures which register with the apertures in the plates 18, and inter osed between the overlapping surfaces 0 the plate members 13 at this vertically disposed seam are the packing strips 19 which are also provided with registering apertures through which the bolts 14 pass.

By the above recited construction it will be obvious that the plates may be conveniently assembled to form the tank, and after the nuts 20 of the bolts 14 have been tightened eflicient liquid or air tight joints will be formed.

The bottom 12 comprises a disk member formed of sheet metal provided with an upturned flange 21 at its peripheral ed e, adapted to surround the lower edge of t e tank wall, and having interposed therebetween a strip of packing material 22, adapted to be tightlyclamped between these members by the bolts 14 to form a liquid or air ti ht joint.

In ig. 5 of the drawings is shown a modified construction of juncture between the bottom 12 and the wall 11. In this construction the lower edge of the wall 11 is provided with an outwardly projecting flange 23. Inte osed between this flange and the bottom p ate 12 is the packing material 24, and disposed above the flange is the strengthening ring 25 which is preferably formed of channel iron as shown. The packing is clamped between the flange 23 and bottom 12 by means of the bolts 14 which pass through registering apertures formed in the several parts.

By forming the strengthening member 16 of channel iron I not only attain a maximum of strength with a minimum Weight, but the channel forms an cfi'eetive lock for the bolt heads, preventing them from turning when the nuts of the bolts are set up.

With a tank constructed as above described it will be apparent that the tank ma be shipped in aknock-down condition an readily assembled at its destination with the employment of skilled mechanics, and when assembled will have great strength compared With its Weight.

What I claim is:

A tank construction, comprising a plurality of sectional segmental plates provided with longitudinally disposed corrugations extending from one edge to the other, ad-

jacent edges of which being overlapped to form seams and being provided with registering apertures, a packing member disposed hetween the overlapping edges of the sectional plates provided with apertures adapted to register with the apertures in the plates, channel irons disposed at each seam provided with apertures adapted to register with the apertures in the plates and packing members, the vertically disposed channel irons being bent transversely intermediate their lengths to fit within the corrugations oi' the plates, and bolts adapted to pass through the apertures in these members.

In witness that I c aim the foregoing I have hereunto suhscril ,l my name this 27th day of July, 1922.

FREDERICK W. TTOLBROOK. 

